Yarn spinning or twisting apparatus.



No. 660,625. Patented Oct. 30. I900. G. 0. DRAPEB.

YARN SPINNING 0R TWISTING APPARATUS;-

(Application filed Kay 11, 1900.)

(No Model.)

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@NrrED STATES GEORGE O. DRAPER, OF HOPEDALE,

MASSACHUSETTS, ASSIGNOR TO THE DRAPER COMPANY, OF SAME PLACE ANDPORTLAND, MAINE.

YARN SPINNING OR TWISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 660,62 5, dated October30. 1 900- ipplication filed May 11. 1900.

0 all whom, it may concern.-

Be it known that I, GEORGE O. DRAPER, a citizen of the UnitedStates,residing at Hope dale, in the county of Worcester and State ofMassachusetts, have invented an Improvement in Yarn Spinning or TwistingApparatus,ot' which the followingdescription, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

In other applications I have shown various forms of duplextraveler-supports comprising fixed and rotatable annular members, withboth of which the traveler cooperates, such devices being int-ended foruse in rotary-ring spinning or twisting apparatus, which has for itsobject the production of a traveler-support which will rotate with thetraveler when the frame is running at high speed.

It is well known to those skilled in spinning or twisting apparatus that.when the frame is started up the traveler pulls with considerable forceagainst both flanges of the well-known double-flanged ring, while afterhigh speed is attained the action of centrifugal force on the travelercauses its outer hearing portion to run upon the upright externalsurface of the web of the ring. In my present invention I have utilizedthis action of the traveler in connection with a rotary-ring apparatus,the traveler being provided with a fixed and a rotatable race, initialoperation of the frame causing the traveler to run on one race, andthereafter centrifugal force operates to effect engagement of thetraveler with the other race.

My novel apparatus hereinafter to be described in one particularembodiment there of is constructed and arranged to be readilysubstituted for the ordinary rings now in very general use.

Figure 1 is an enlarged diametral section of one embodiment of mypresent invention applied to a spinningor twisting frame, only a portionof the ring-rail and spindle being shown, the traveler being shown inthe position assumed when spinning is begun; and Fig. 2 is a similarview omitting the spindle Serial No. 16.288. (No model.)

and bobbin, but showing the position of the traveler relai ive to its sopport when the frame is running at speed.

The ring-rail R, spindle S, only a part of which is shown and which isof any wellknownhiglrspeed type, and the sheet-metal holder h, havingresilient holding clips or lugs h, may be and are of any usual orwellknown construction, the yarn being lead from the usual deliveryrollsthrough a pigtail (not shown) through the traveler t to the bobbin B onthe spindle. The traveler-support is herein shown as duplex andcomprising concentric annular members (6 b, the former, which is hereinshown as fixed, being held in place and prevented from rotation by theusual holderh, said memberahavingits top beveled at its interior, as ata", and with asubstantially upright annular external face a, whichlatter forms a traveler-race. The body I) of the movable member has atits upright end two oppositely-extended lateral flanges b b ,forming itshead and constituting a traveler-race, the body having an externalinverted frustoconical face b adjacent the beveled face a of the fixedmember, said faces being in engagement when the member Z) is quiescent,as in Fig. 1. The member I) isrotatableand axially and radially movablewithin certain limits, and to prevent undue axial movement, due to thestress of the yarn and the action of the traveler, I have provided pinsor studs a which are mountedin the fixed member and extend loosely intoan annulargroove b in the foot of the rotatable member.

The traveler t is of wellknown form, having a substantially semicircularbody with inturned ends t R, which embrace the flanged head of themember I).

When the frame is started, the parts being in the position shown, thetraveler will engage both flanges b b of the movable mem her and willtravel thereupon. As the speed increases, however, the friction of thetraveler and the stress of the yarn will act to gradually rotate themember b, and at the same time said member is lifted, so that when highspeed is attained the traveler and said member will apparently rotate inunison, the

clearance c, Fig. 2, between the adjacent faces of the fixed and movablemembers permitting slight radial movement of the latter, and the memberI) Will seem to float out of contact with the fixed member. In themeantime the traveler will, by or through centrifugal action, assume theposition shown in Fig. 2, one end, as 29, remaining in engagement withthe flange 19 of the rotating ring I), while the portion t has movedaway from the flange 19' into engagement with the fixed race a of themember a. This change in the position of the traveler from engagementwith the rotating race to joint engagement with the fixed and rotatingraces serves to steady the operation and to largely counteract slightchanges in the stress of the yarn, the cooperation with the fixed raceappearing to act as a governor. When power is shut off, the parts willgradually and in reverse order assume the relative positions shown inFig. 1.

My invention is not restricted to the arrangement and constructionherein shown, for I have illustrated one practical embodiment of myinvention Without attempting to .shoW the various changes ormodifications thereof which could be made by one skilled in the artWithout departing from the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a spinning or twisting frame, a rotatable ring having atraveler-race, a traveler, and means to exert automatically a drag onthe traveler when the frame is running at speed.

2. In a spinning or twisting frame, a rotatable ring having atraveler-race, a traveler, and a fixed race, the traveler being moved bycentrifugal force into engagement with the fixed race when the frame isrunning at speed.

3. In a spinning or twisting frame, a rot-atable ring capable of radialand axial movement under the stress of the yarn, and provided with atraveler-race, means to limit radial movement of the ring, said meansalso having a traveler-race, and a traveler, the action of centrifugalforce "effecting engagement of the traveler with the latter race whenthe frame is running at speed.

4:. The combination with a rotatable ring having outer and inner racesfor the traveler, of a surrounding fixed ring having a travelerraceadjacent the outer movable race.

5. The combination with a rotatable ring having a double flange for thetraveler, of a fixed ring having a traveler-race, and the traveler, thelatter being caused to engage the fixed race by or through centrifugalforce.

. 6. The combination with concentric and relatively-movable annularmembers having inverted frusto-conical adjacent faces, each memberhaving a traveler-race, of a traveler, said races being so located thatthe traveler is made to engage the race of one of the members by orthrough centrifugal action.

7. The combination with a rotatable ring capable of radial and axialmovement, and a traveler in engagement with the ring, of fixed means forlimiting radial and axial movement and provided with a bearing-surfaceonto' which the traveler is moved by centrif- 11 gal action.

8. The combination with a rotatable ring having a double-flanged head,and a traveler revoluble upon said head, of a fixed travelerrace locatedbelow and adjacent one of said flanges, to at times be engaged by thetraveler.

9. In a spinning or twisting frame, a traveler-support provided withfixed and rotatable traveler-races, and a traveler, the lattercooperating with one of the races when running at low.speed and movableby or through centrifugal action into engagement also with the otherrace when running at high speed.

10. 'In a spinning or twisting frame, a rotatable ring capable of radialand axial move ment under the stress of the yarn, and provided with atraveler-race, a traveler revoluble thereon, and fixed means forlimiting radial and axial movement of the said ring, upward movement ofthe latter when running at high speed increasing the clearance betweenit and the said means, the traveler at such time being brought bycentrifugal action into engagement with said means.

11. The combination with a rotatable ring having oppositely-extended,lateral flanges to form a traveler-race, of a concentric fixed ringhaving a substantially vertical travelerrace adjacent and below one ofthe flanges, and a traveler adapted to travel initially in engagementwith the flanges and thereafter to also engage the fixed race.

12. The combination with a rotatable ring, and a traveler cooperatingtherewith, of a fixed race intermittingly cooperating with the traveler.

In testimony whereof I have signed my name to this specificaton in thepresence of two subscribing witnesses.

GEORGE O. DRAPER.

Witnesses:

E. D. BANGROFT, ERNEST W. W001).

